650488026421 has 2 divisors, whose sum is σ = 650488026422. Its totient is φ = 650488026420.

The previous prime is 650488026407. The next prime is 650488026449. The reversal of 650488026421 is 124620884056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 645017796900 + 5470229521 = 803130^2 + 73961^2 .

It is a cyclic number.

It is not a de Polignac number, because 650488026421 - 2⁵ = 650488026389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (650488066421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325244013210 + 325244013211.

It is an arithmetic number, because the mean of its divisors is an integer number (325244013211).

Almost surely, 2^650488026421 is an apocalyptic number.

It is an amenable number.

650488026421 is a deficient number, since it is larger than the sum of its proper divisors (1).

650488026421 is an equidigital number, since it uses as much as digits as its factorization.

650488026421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 737280, while the sum is 46.

The spelling of 650488026421 in words is "six hundred fifty billion, four hundred eighty-eight million, twenty-six thousand, four hundred twenty-one".